Home / 167,390.68-231,002.18-90,909.76

Finding the Fourth Proportional to 167,390.68, 231,002.18 and 90,909.76

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Solution

The fourth proportional to 167,390.68, 231,002.18 and 90,909.76 is: 125,457.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,390.68 : 231,002.18 = 90,909.76 : x
  2. Step 2: Convert to fraction form
    167,390.68/231,002.18 = 90,909.76/x
  3. Step 3: Cross multiply
    167,390.68x = 231,002.18 × 90,909.76
  4. Step 4: Simplify right side
    167,390.68x = 21,000,352,743.28
  5. Step 5: Solve for x
    x = 21,000,352,743.28/167,390.68
  6. Step 6: Final answer
    x = 125,457.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.